1. Four gears speed can be selected
2. Up and down angle can be rotated 15 degrees
3. The detachable front cover can easily clean the fan
4. Small size, easy to carry
5. Material: ABS+PP+ electronic components
6. Charging current: 2A
7. Working power: 3W
8. Battery capacity: 4000mAh
9. Size: 188x97x37mm